Changing original steel propane tanks to aluminum 23D

I'd like to change out my original 30 pound steel propane cylinders on my 2013 23D to Worthington (or other) aluminum tanks. At the moment the only thing that concerns me is how to fit the existing hold down bar into the new style aluminum tank top (there is a circular cutout rather than a horizontal surface for the bar's notches to lay over).



I've spent a lot of time searching so I apologize if this has been addressed elsewhere.



Does anyone have experience doing this? Or know of any issues?



I'm just not able to manhandle the heavier steel tanks.